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2021 Beta RR 4T 350 Dirt Bike Review Specs

The most maneuverable bike in the 4-stroke model family is the 2021 Beta RR 4T 350 Dirt Bike; it prefers high-rev riding and still produces highly linear power.

2021 Beta RR 4T 350 Dirt Bike

2021 Beta RR 4T 350 Dirt Bike – Features and Specs

Engine and Transmission

The engine of 2021 Beta RR 4T 350 Dirt Bike comes with the displacement of 349.1 ccm, four-stroke, the single-cylinder engine that features compression power ratios of 13, 2, and 1. Twin or double overhead cams control the fuel system, which also features a carburetor with Synerject dual electronic injection (DOHC)—variable ignition timing built-in Kokusan type DC-CDI ignition system without a trembler.

Also Read: Beta RR 4T 390 2021 Powerful Dirt Bike Review

A liquid cooling system that uses two oil pumps to lubricate the engine improves engine efficiency better than 2020 Beta RR 4T 350. Thanks to a chain transmission system and a 6-speed gearbox, the ride is echo-free and comfortable. A dirt bike’s wet multi-disc clutch enables the rider to decompress while taking a smooth ride. The fuel consumption rate is 3.80 liters/100 km.

Chassis, Suspension, Brakes, and Wheels

The double cradle split Molybdenum steel frame of the 2021 Beta RR 4T 350 Dirt Bike is equipped with a hydraulic fork and a ø458mm front suspension shaft. Monoshocks with progressive compound levers and compression and rebound settings for efficient rear suspension offer a smoother, more enjoyable ride. Due to single disc brakes in both the front and the back, the rider can stop quickly.

2021 Beta RR 4T 350 Dirt Bike

Physical measures and capacities

The 2021 Beta RR 4T 350 Dirt Bike is perfect for everyone, thanks to its total height of 1270 mm. On the Beta, RR 4T 350, the rider’s preferred seat height can be changed—the 1490 mm wheelbase measures. As a result, a rider is allowed to drive a vehicle on the road that has a good fuel capacity of up to 9.00 liters.

2021 Beta RR 4T 350 Dirt Bike – Technical Specifications

Engine and transmission

Displacement 349.1 ccm (21.30 cubic inches)
Engine type Single-cylinder, four-stroke
Compression 13.2:1
Bore x stroke 89 mm x 57.4 mm (3.5 inches x 2.3 inches)
Fuel system Carburettor. Synerject dual electronic injection
Fuel control Double Overhead Cams/Twin Cam (DOHC)
Ignition DC-CDI without trembler with variable ignition timing, Kokusan type.
Lubrication system Two oil pumps
Cooling system Liquid
Gearbox 6-speed
Transmission type Chain (final drive)
Clutch Wet multi-disc
Fuel consumption 3.80 liters/100 km (26.3 km/l or 61.90 mpg)
Greenhouse gases 88.2 CO2 g/km. (CO2 – Carbon dioxide emission)

Chassis, suspension, brakes, and wheels

Frame type Molybdenum steel with a double cradle split above the exhaust port
Front Suspension Hydraulic USD fork with ø458mm shaft
Rear Suspension Monoshock with progressive compound lever
Front tire 90/90-21
Rear tire 140/80-18
Front brakes Single disc
Diameter 260 mm (10.2 inches)
Rear brakes Single disc
Diameter 240 mm (9.4 inches)

Physical measures and capacities

Dry weight 117.5 kg (259.0 pounds)
Seat height 940 mm (37.0 inches). If adjustable, lowest setting.
Overall height 1270 mm (50.0 inches)
Overall length 2180 mm (85.8 inches)
Overall width 815 mm (32.1 inches)
Ground clearance 320 mm (12.6 inches)
Wheelbase 1490 mm (58.7 inches)
Fuel capacity 9.00 liters (2.38 US gallons)
Reserve fuel capacity 2.30 liters (0.61 US gallons)

Other specifications

Color options Red/white/Black
Starter Electric


The 2021 Beta RR 4T 350 Dirt Bike model is available in red, white, and black. It has an electric starter. The bike is not heavily loaded and weighs 117.5 kg. Off-road, however, a single-cylinder, four-stroke engine and multi-disc clutch are meant to offer a more pleasant ride.

A sturdy chassis is made of a double cradle frame made of molybdenum steel with adjustable suspension. The bike’s wheels have 320 mm of ground clearance and offer good traction on the surface. A strong fuel capacity and 2.30 liters of reserve gasoline also contribute to a smoother, faster, and longer ride. When operating a 2021 Beta RR 4T 350 Dirt Bike, there are no limitations, and the rider cannot stop praising this bike.

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